CA2223415C - Automated biopsy instruments - Google Patents
Automated biopsy instruments Download PDFInfo
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- CA2223415C CA2223415C CA002223415A CA2223415A CA2223415C CA 2223415 C CA2223415 C CA 2223415C CA 002223415 A CA002223415 A CA 002223415A CA 2223415 A CA2223415 A CA 2223415A CA 2223415 C CA2223415 C CA 2223415C
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- stylet
- cannula
- actuator
- biopsy device
- housing
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- 238000001574 biopsy Methods 0.000 title claims abstract description 104
- 238000000034 method Methods 0.000 claims abstract description 12
- 238000010304 firing Methods 0.000 claims description 17
- 230000033001 locomotion Effects 0.000 claims description 14
- 241000283153 Cetacea Species 0.000 claims 1
- 210000004872 soft tissue Anatomy 0.000 abstract description 8
- 210000001519 tissue Anatomy 0.000 description 33
- 230000006835 compression Effects 0.000 description 5
- 238000007906 compression Methods 0.000 description 5
- 208000012287 Prolapse Diseases 0.000 description 4
- 238000013459 approach Methods 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 241001465754 Metazoa Species 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000000881 depressing effect Effects 0.000 description 1
- 230000000994 depressogenic effect Effects 0.000 description 1
- 238000003745 diagnosis Methods 0.000 description 1
- 238000002324 minimally invasive surgery Methods 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B10/00—Instruments for taking body samples for diagnostic purposes; Other methods or instruments for diagnosis, e.g. for vaccination diagnosis, sex determination or ovulation-period determination; Throat striking implements
- A61B10/02—Instruments for taking cell samples or for biopsy
- A61B10/0233—Pointed or sharp biopsy instruments
- A61B10/0266—Pointed or sharp biopsy instruments means for severing sample
- A61B10/0275—Pointed or sharp biopsy instruments means for severing sample with sample notch, e.g. on the side of inner stylet
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B10/00—Instruments for taking body samples for diagnostic purposes; Other methods or instruments for diagnosis, e.g. for vaccination diagnosis, sex determination or ovulation-period determination; Throat striking implements
- A61B10/02—Instruments for taking cell samples or for biopsy
- A61B2010/0208—Biopsy devices with actuators, e.g. with triggered spring mechanisms
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- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Medical Informatics (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Pathology (AREA)
- Molecular Biology (AREA)
- Surgery (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Surgical Instruments (AREA)
- Crystals, And After-Treatments Of Crystals (AREA)
Abstract
The present invention provides automated biopsy instruments (10) especially useful for improving minimally invasive medical procedures to obtain soft tissue biopsy samples. The biopsy instruments (10) provide side-by-side actuators (30, 32) which retract a stylet (22) and a cannula (20) in specific sequences. The biopsy instruments (10) may include a single spring or two springs (48) to sequentially fire the stylet (22) and the cannula (20).
Description
WO 96/39941 PCT'/US96/075I5 AUTOMATED BIOPSY INSTRUMENTS
D a s c r i n t 3. o n Field of the Invention This invention generally relates to biopsy instruments. More specifically, this invention relates to automated biopsy instruments especially useful for improving minimally invasive medical procedures to obtain soft tissue biopsy samples.
Background of the Invention A soft tissue biopsy procedure is a medical procedure for removing a soft tissue sample from a human or animal. The tissue sample can be analyzed to assist a medical professional in formulating a diagnosis. The biopsy procedure is a minimally invasive procedure for obtaining the tissue sample.
f The biopsy procedure can be performed utiliz ing various techniques and devices. Typically, a y biopsy device includes an inner stylet slidably positioned inside an outer cannula. The stylet is a solid, pointed needle having a tissue sampling recess, and the cannula is a hollow, open ended needle having a sharp tip. The stylet and the cannula are manipulated to capture a tissue sample , in the sample recess.' Existing biopsy devices include manual, semi-automated, and automated , devices.
Manual biopsy devices allow for manual move-ment of the stylet and the cannula. Initially, the stylet and the cannula are inserted into soft tissue with the cannula covering the stylet tissue recess. Next, the stylet is manually advanced into the soft tissue to expose the tissue recess and to allow tissue to prolapse into the recess. The cannula is then manually advanced to sever the tissue and capture a tissue sample within the recess. Next, the stylet or the entire the biopsy device is withdrawn from the patient and the tissue sample removed from the recess.
Existing manual biopsy devices have exhibited drawbacks. For example, manual devices require the use of two hands to advance the stylet while hold ing the cannula in position, and to hold the stylet in position while advancing the cannula. This biopsy technique requires great manual dexterity and coordination. Further, the cutting speed of the manually advanced cannula is quite slow which may result in a poor quality tissue sample.
Existing semi-automatic biopsy devices provide stylet and cannula advancement motions similar to manually operated devices. After the stylet is manually advanced, the semi-automatic devices typically include a compression spring that advan-ces the cannula to capture a tissue sample. The semi-automatic devices still require manual manipu- ' lation of the stylet.
Existing automatic biopsy devices also provide stylet and cannula advancement motions to capture a ______ _ _ tissue sample in a stylet sample recess. The automatic devices generally include two compression springs to advance the stylet and the cannula. A
first compression spring advances the stylet for-S ward after a firing button is depressed. A second compression spring subsequently advances the cannu-la forward to sever and capture a tissue sample .
Existing automatic devices have exhibited draw-backs. For example, automatic devices have re-quired the use of two hands to cock the device (compress the springs). One device purports to be cockable with a single hand; but, the hand must change positions after cocking the cannula in order to cock the stylet. Changing hand positions is cumbersome and encourages two handed cocking.
Additionally, as a compression spring expands, the spring force decreases. As the spring force de-creases, the stylet and cannula speeds decrease, which may compromise the quality of the tissue sample. Also, existing automatic devices have provided insufficient time to allow the tissue to relax into the sample recess. Consequently, the size of the tissue sample may be reduced.
Existing biopsy devices have been designed to be either reusable or disposable. The reusable devices include a reusable handle and disposable needle assemblies. The stylet and cannula are removable from the handle and disposable with a new stylet and cannula. The handle can be cleaned and re-sterilized after use and thus, is reusable.
Disposable devices include a permanent stylet and cannula and are not re-sterilizable. Accordingly, disposable devices are used on a single patient and then discarded.
Examples of existing biopsy devices are dis-closed in U.S. Patent Nos. 4,600,014; 4,944,308;
D a s c r i n t 3. o n Field of the Invention This invention generally relates to biopsy instruments. More specifically, this invention relates to automated biopsy instruments especially useful for improving minimally invasive medical procedures to obtain soft tissue biopsy samples.
Background of the Invention A soft tissue biopsy procedure is a medical procedure for removing a soft tissue sample from a human or animal. The tissue sample can be analyzed to assist a medical professional in formulating a diagnosis. The biopsy procedure is a minimally invasive procedure for obtaining the tissue sample.
f The biopsy procedure can be performed utiliz ing various techniques and devices. Typically, a y biopsy device includes an inner stylet slidably positioned inside an outer cannula. The stylet is a solid, pointed needle having a tissue sampling recess, and the cannula is a hollow, open ended needle having a sharp tip. The stylet and the cannula are manipulated to capture a tissue sample , in the sample recess.' Existing biopsy devices include manual, semi-automated, and automated , devices.
Manual biopsy devices allow for manual move-ment of the stylet and the cannula. Initially, the stylet and the cannula are inserted into soft tissue with the cannula covering the stylet tissue recess. Next, the stylet is manually advanced into the soft tissue to expose the tissue recess and to allow tissue to prolapse into the recess. The cannula is then manually advanced to sever the tissue and capture a tissue sample within the recess. Next, the stylet or the entire the biopsy device is withdrawn from the patient and the tissue sample removed from the recess.
Existing manual biopsy devices have exhibited drawbacks. For example, manual devices require the use of two hands to advance the stylet while hold ing the cannula in position, and to hold the stylet in position while advancing the cannula. This biopsy technique requires great manual dexterity and coordination. Further, the cutting speed of the manually advanced cannula is quite slow which may result in a poor quality tissue sample.
Existing semi-automatic biopsy devices provide stylet and cannula advancement motions similar to manually operated devices. After the stylet is manually advanced, the semi-automatic devices typically include a compression spring that advan-ces the cannula to capture a tissue sample. The semi-automatic devices still require manual manipu- ' lation of the stylet.
Existing automatic biopsy devices also provide stylet and cannula advancement motions to capture a ______ _ _ tissue sample in a stylet sample recess. The automatic devices generally include two compression springs to advance the stylet and the cannula. A
first compression spring advances the stylet for-S ward after a firing button is depressed. A second compression spring subsequently advances the cannu-la forward to sever and capture a tissue sample .
Existing automatic devices have exhibited draw-backs. For example, automatic devices have re-quired the use of two hands to cock the device (compress the springs). One device purports to be cockable with a single hand; but, the hand must change positions after cocking the cannula in order to cock the stylet. Changing hand positions is cumbersome and encourages two handed cocking.
Additionally, as a compression spring expands, the spring force decreases. As the spring force de-creases, the stylet and cannula speeds decrease, which may compromise the quality of the tissue sample. Also, existing automatic devices have provided insufficient time to allow the tissue to relax into the sample recess. Consequently, the size of the tissue sample may be reduced.
Existing biopsy devices have been designed to be either reusable or disposable. The reusable devices include a reusable handle and disposable needle assemblies. The stylet and cannula are removable from the handle and disposable with a new stylet and cannula. The handle can be cleaned and re-sterilized after use and thus, is reusable.
Disposable devices include a permanent stylet and cannula and are not re-sterilizable. Accordingly, disposable devices are used on a single patient and then discarded.
Examples of existing biopsy devices are dis-closed in U.S. Patent Nos. 4,600,014; 4,944,308;
4,958,625; 5,368,045; and Re34,056. A reusable automatic device containing a single spring for stylet and cannula advancement is disclosed in U.S. Patent Mo.
5,121,751.
Therefore, needs exist to improve biopsy devices.
Particularly, needs exist to improve automated biopsy instruments especially useful for minimally invasive medical procedures to obtain soft tissue biopsy samples. The present invention satisfies these and other needs to improve biopsy devices.
Other aspects and advantages of the present invention will become apparent after reading this disclosure, including the claims, and reviewing the accompanying drawings.
Summary of the Invention The present invention provides automated biopsy instruments especially useful for improving minimum invasive medical procedures to obtain soft tissue biopsy samples.
The biopsy instruments provide side-by-side actuators which retract a stylet and a cannula in specific sequences. The retraction sequences include cannula retraction with subsequent stylet retraction, and simultaneous cannula and stylet retraction. The side-by-side design of the cannula and stylet actuators allow the biopsy instrument to be operated with a single human hand without repositioning the hand.
More specifically the invention provides a biopsy device comprising: a housing; a cannula slidably extending from the housing through an opening; a stylet slidably positioned within the cannula; a stylet. actuator associated with the stylet to retract the stylet within the housing;
and; a cannula actuator associated with the cannula to -4a-retract the cannula within the housing, the cannula actuator juxtaposed the stylet actuator; wherein the stylet actuator is adapted to be actuated with a single finger of a single hand while the hand is in a first position holding the biopsy device, and the cannula actuator is adapted to be actuated by the same single finger while the hand remains in the first position.
The invention also provides the biopsy device comprising: a cannula permanently secured within a housing and slidably extending through a first end of the housing; a stylet permanently secured within the housing and slidably extending through the first end within the cannula; and, a spring biasable against the stylet and the cannula to slide the stylet and the cannula toward the first end; further comprising: an engagement mechanism attached to the spring, the engagement mechanism alternatively interlockable with a stylet slide attached to the stylet and abuttable with a cannula slide attached to the cannula; and a ramp connected to the housing and wherein the engagement mechanism comprises a cam surface which cams along the ramp to alternatively interlock and release the engagement mechanism with the stylet slide.
The invention also provides a biopsy device comprising: a stylet slidably positioned within a cannula, wherein the stylet and the cannula are biased toward one end of the biopsy device by at least one spring; a stylet actuator associated with the stylet to move the stylet from a first stylet position to a second stylet position; and, a cannula actuator associated with the cannula to move the cannula from a first cannula position to a second cannula position; wherein the stylet and cannula actuators are positioned transversely side-by-side each other such that the stylet actuator is adapted to be actuated with a single -4b-finger of a single hand while the hand is in a first position holding the biopsy device, and the cannula actuator is adapted to be actuated by the same single finger while the hand remains in the first position.
The invention further provides a method of firing a biopsy device comprising the steps of: providing a slidable cannula at a first cannula position and a slidable stylet within the cannula at a first stylet position; moving the stylet from the first stylet position to a second stylet position by a biasing force of a spring; moving the cannula from the first cannula position t,o a second cannula position simultaneously during a portion of the stylet movement; and, moving the cannula from the second cannula position to a third cannula position by the biasing force of the spring.
The biopsy instruments may include a single spring or two springs to sequentially fire the stylet and the cannula. A constant force spring is utilized in the single spring embodiment. The single spring embodiment also includes an engagement mechanism connected to the constant force spring. The engagement mechanism first fires the stylet, initiates concurrent cannula firing, and then completes cannula firing. The biopsy device provides a time delay to allow tissue to more WO 96/39941 PCT/tJS96/U75IS
effectively prolapse into the stylet tissue sample recess.
A safety cover is also provided to prevent accidental firing of the biopsy instrument.
brief Description of the Drawings Figure 1 is a perspective view of a biopsy instrument made in accordance with the principles of the present invention.
Figure 2 is a cross-sectional, perspective view of a biopsy instrument made in accordance with the principles of the present invention.
Figure 3 is a cross-sectional view of the biopsy instrument of Figure 2 in a cannula retract-ed mode.
Figure 4 is a cross-sectional view of the biopsy instrument of Figure 2 in a cannula and stylet retracted mode.
Figure 5 is an enlarged, cross-sectional view of an interlocking mechanism.
Figure 6 is an exploded, perspective view of an alternative embodiment of a biopsy instrument made in accordance with the principles of the present invention.
Figure 7 is a perspective view of another alternative embodiment of a biopsy instrument made in accordance with the principles of the present invention.
Figure 8 is a perspective view of the biopsy instrument of Figure 7 in a cannula retracted mode.
Figure 9 is a perspective, partial cross-sec tional view of the biopsy instrument of Figure 7 in a cannula and stylet retracted mode.
Detailed Description of the Invention Although the present invention can be made in many different forms, the preferred embodiments are described in this disclosure and shown in the attached drawings. This disclosure exemplifies the principles of the present invention and does not limit the broad aspects of the invention only to the illustrated embodiments.
Figure 1 shows a perspective view of a biopsy instrument 10 made in accordance with the princi- , ples of the present invention. The biopsy instru-ment 10 includes a housing 12 having a left housing 14 and a right housing 16. The housing could be made from other components, for example, an upper housing and a lower housing as shown in Figure 6.
Referring to Figure 1, preferably, the housing 12 is ergonomically designed to conform to the human hand and may include one or more finger rests 18.
The ergonomic design includes a housing shape that coincides with contours of the human hand and is comfortable to hold. The biopsy instrument 10 also includes a cannula actuator 30, a stylet actuator 32, and a safety cover 34 as described below.
A cannula 20 and a stylet 22 are slidably con tained within the housing 12 and extend out of an opening 24 in a housing end 26. The cannula 20 is a hollow needle having a sharp, openend. The stylet 22 is a solid needle having a pointed end and a tissue sample recess 28. The recess 28 is shown in Figure 3. The stylet 22 is slidably posi-tioned within the cannula 20 and extends beyond the cannula end.
Figure 2 shows a cross-sectional, perspective view of a biopsy instrument 10 made in accordance with the principles of the present invention. The cannula 20 and the stylet 22 are permanently at-tached to two self-guided slides, a cannula slide ' 36 and a stylet slide 38, respectively. The cannu-la and stylet slides 36, 38 are axially slidable on ' a guide 40 connected to the housing 12. There may be two guides 40, one guide 40 on each half of the housing. The stylet slide 38 is slidable between a WO 96/39941 PCT/US96/~75I5 _7_ rear stop block 42 and a middle stop block 44, and the cannula slide 36 is slidable between the middle stop block 44 and a front stop block 46.
The front, middle, and rear stop blocks 42, 44, 46 are permanently secured to the housing 12 at their respective locations.
Accordingly, the stylet slide 38 is slidable between a first position adjacent the rear stop block 42 and a second position adjacent the middle stop block 44. The cannula slide 36 is slidable between a f first position adj acent the middle stop block 44 and a second position adjacent the front stop block 46. When the stylet slide 38 and the cannula slide 36 are in their first positions, a portion of the stylet 22 and a portion of the cannula 20 are retracted into the instrument 10.
When the stylet slide 38 and the cannula slide 36 are in their second positions, the stylet 22 and cannula 20 are advanced out of the instrument 10.
A constant force spring 48 provides the driv-ing force for the stylet 22 and the cannula 20.
The constant force spring 48 maintains a constant speed of travel for both the stylet 22 and the cannula 20. The constant force spring 48 is a rotatable and flexible spring coil. Also one or more constant force springs 48 can be utilized by connecting the multiple springs at their non-coiled ends. Accordingly, multiple springs 48 having relatively small coil diameters can be utilized to supply the same force as a single spring 48 having a relatively larger coil diameter. The coiled end of the spring 48 is secured to the housing 12 and the free end of the spring 48 slidably extends through a passageway 50 in the cannula slide 36 and is attached to an engagement mechanism 52.
The engagement mechanism 52 includes an inter-lock end 54 and a cam surface 56. The cam surface -g-56 of the engagement mechanism 52 cams along a ramp 58 to alternatively interlock and release the interlock end 54 with the stylet slide 38 as de-scribed in detail below: The engagement mechanism 52 may include multiple cam surfaces 56 that cam , along multiple spaced apart ramps 58, as shown more clearly in Figure 6, for example.
Referring to Figure 2, the cannula actuator 30 and the stylet actuator 32 are independent and slidably extend along the housing 12 and through a housing opening 60. The stylet actuator 32 and the cannula actuator are juxtaposed. Particularly, the cannula actuator 30 and the stylet actuator 32 are positioned side-by-side each other to permit actua-tion of both actuators 30, 32 by a single finger of a single hand without repositioning the hand. The actuators 30, 32 provide a mechanism to place the biopsy device 10 in a ready mode as described in detail below. The actuators 30, 32 include a finger surface 62 which can be contacted by a single finger of a single human hand to actuate (slide) the actuators 30, 32. A projection 64 on the stylet slide 38 engages the stylet actuator 32.
Likewise, a projection 66 on the cannula slide 36 engages the cannula actuator 30.
A spring loaded firing trigger 68 is provided at a distal end 70 of the instrument 10 opposite of the proximal front end 26. The firing trigger 68 is pressed to fire the instrument 10. Particular-1y, the firing trigger 68 fires and releases the stylet 22 as described below. The hinged safety cover 34 (shown in Figure 1) is provided to prevent ' accidental firing of the instrument. The safety cover 34 can be moved between a first position ' covering the firing trigger 68 and a second posi-tion allowing access to the firing trigger 68. The firing trigger 68 could be placed at any location on the instrument 10, including the proximal front end, and an appropriate mechanism provided to fire the instrument 10.
Operation of the biopsy instrument 10 will be described with reference to Figures 2-5. Initial-ly, Figure 2 shows the instrument 10 in a fired mode. The biopsy instrument 10 is placed in a ready mode by holding the instrument 10 in a single hand in a first position and actuating the cannula actuator 30 and the stylet actuator 32 to retract the cannula 20 and the stylet 22.
Referring to Figure 3, a cross-sectional view of the biopsy instrument 10 in a cannula retracted mode is shown. First, the cannula actuator 30 is retracted rearwardly by a finger of the same single hand contacting the finger surface 62. The cannula actuator 30 engages the projection 66 on the cannu-la slide 36 and slides the cannula slide 36 and the cannula 20 rearwardly against the force of the con-stant force spring 48. The engagement mechanism 52 is abutted against the cannula slide 36 and thus, the spring 48 is uncoiled as the cannula actuator 30 is actuated.
Figure 5 shows an enlarged, cross-sectional view of an interlocking mechanism in three stages.
The first stage is shown where the cannula slide 36 retracts, the cam surface 56 of the engagement mechanism 52 is advanced and elevated along a first cam surface 58a of the ramp 58. The second stage is when the cam surface 56 slides along a horizon-tal ramp surface 58c. The interlock end 54 of the engagement mechanism 52 is guided into a lock 72 on the stylet slide. The third stage is shown as the engagement mechanism cam surface 56 advances and descends along a second cam surface 58b of the ramp 58; the interlock end 54 releasably locks to the lock 72 of the stylet slide 38.
Referring to Figure 3, the cannula slide 36 contacts a first stylet latch 74 and releases the stylet slide 38 from being latched to the middle stop block 44. The first stylet latch 74 is shown in Figure 4 unlatched to the middle stop block 44. , As shown in Figure 3, a cannula latch 76 latches the cannula slide 36 to the middle stop block 44.
In this position of the instrument 10, the cannula 20 is retracted and the stylet tissue sample recess 28 is exposed. If a tissue sample had previously been captured within the recess 28, the tissue sample could now be expelled.
Referring to Figure 4, a cross-sectional view of the biopsy instrument 10 in a cannula and stylet retracted mode (instrument ready for firing mode) is shown. Second, while the same single hand remains in its first position on the instrument 10, the stylet actuator 32 is retracted rearwardly by the same finger contacting the finger surface 62 on the stylet actuator 32. The stylet actuator 32 engages the projection 64 on the stylet slide 38 and slides the stylet slide 38 and the stylet 22 rearwardly against the force of the constant force spring 48. The engagement mechanism 52 is locked to the stylet slide 38 and thus, the spring 48 is further uncoiled as the stylet actuator 32 is actuated. A second stylet latch 78 latches the stylet slide 38 to the rear stop block 42. In this position of the instrument 10, both the cannula 20 and the stylet 22 are retracted and the biopsy instrument 10 is ready for firing.
In the ready mode, the stylet 22 and the cannula 20 are inserted into a patient in the area where a tissue sample is desired.
The biopsy instrument 10 is fired by moving the safety cover 34 at the rear end 70 of the housing 12 away from the spring loaded trigger 68 _ _ _ _ and depressing the trigger 68. The trigger 68 releases the second stylet latch 78 and the spring 48 propels the stylet side 38 and the stylet 22 forward extending the stylet 22 into the tissue.
The stylet recess 28 is exposed and the tissue pro-lapses into the recess 28. The stylet slide 38 ad-vances forward until it contacts the middle stop block 44, and at that point the first stylet latch 74 latches onto the middle stop block 44. The first stylet latch 74 latches onto the middle stop block 44 to prevent the stylet 22 from recoiling as the cannula 20 advances forward.
As the stylet slide 38 approaches the middle stop block 44, the stylet slide 38 impacts the cannula latch 76 and moves the cannula latch 76 radially outward and axially forward. The forward axial movement of the cannula latch 76 initiates forward movement of the cannula slide 36 and the cannula 20 simultaneously and concurrently with the forward travel of the stylet 22.
As the stylet slide 38 approaches the middle stop block 44, the cam surface 56 of the engagement mechanism 52 is elevated along the ramp second cam surface 58b. After the cannula 20 has started its forward motion, the interlock end 54 is elevated sufficiently to be released from the stylet slide lock 72.
The engagement mechanism 52 continues to travel forwardly under the force of the spring 48 and abuts the cannula slide 36. The constant force spring 48 advances the cannula slide 36 and the cannula 22 until the cannula slide 36 contacts the front stop block 46. After the concurrent stylet 22 and cannula 20 motion, the cannula 20 briefly stops until the spring 48 resumes movement of the cannula 20. For example, there may be approximate-ly a millisecond time delay. The time delay pro-vided by the engagement mechanism 52 and the ramp 58 allows additional time for the tissue to pro-lapse into the stylet recess 28.
As the cannula 20 advances over the stylet 22, the cannula 20 severs the tissue and captures a tissue sample within the recess. After the tissue sample is captured, the biopsy instrument 10 is re moved from the patient. The cannula 20 can be re tracted as discussed above to expose the tissue sample and remove the sample from the biopsy in-strument 10.
The biopsy instrument 10 only permits a spe-cific actuation sequence of the cannula 20 and the stylet 22. The cannula 20 must be retracted prior to retraction of the stylet 22 because in the fired mode, the stylet slide 38 is latched to the middle stop block 44. The stylet slide 38 is unlatched from the middle stop block 44 only by the cannula slide 36 contacting the first stylet latch 74.
This prevents a captured tissue sample from being dragged along the inside of the cannula 20 and dam-aged. In other words, the cannula actuator 30 is actuated independently of the stylet actuator 32, and subsequently the stylet actuator 32 is actuat-ed. The cannula actuator 30 and the stylet actua-tor 32 return to their forward positions as shown in Figure 1 as the stylet 22 and the cannula 20 are fired.
Figure 6 shows an exploded, perspective view of an alternative embodiment of a biopsy instrument 10 made in accordance with the principles of the present invention. Components of the alternative biopsy instrument 10 shown in Figure 6 are identi fied by the same reference numerals as used in ' Figures 1-5.
The biopsy instrument 10 shown in Figure 6 includes an upper housing 14 and a lower housing WO 96/39941 PCT/c7s96/o75i5 16. A guide 40 is a separate component from the housing. The stylet slide 38 and the cannula slide 36 slide along the guide.40. The front stop block 46, the middle stop block 44, and the rear stop . 5 block 42 are attached to the guide 40 in their respective locations. The cannula actuator 30 and the stylet actuator 32 slide on an actuator support 80. The actuator support 80 includes two slots 82, 84. The projection 64 on the stylet slide 38 ex-tends through and slides along the slot 82 such that the stylet actuator 32 engages the stylet slide 38. Likewise, the projection 66 on the cannula slide 36 extends through and slides along the slot 84 such that the cannula actuator 30 engages the cannula slide 36.
Figure 7 shows a perspective view of the internal components of an alternative embodiment of a biopsy instrument 100 made in accordance with the principles of the present invention. Components of the alternative biopsy instrument 100 which are similar to the components in biopsy instrument 10 of Figure 2 are identified by corresponding numer-als in the 100 series.
The biopsy instrument 100 includes two springs, a stylet spring 186 and a cannula spring 188. The stylet spring 186 is positioned between the rear stop block 142 and the stylet slide 138, and biases the stylet slide 138 forward. Likewise, the cannula spring 188 is positioned between the middle stop block 144 and the cannula slide 136, and biases the cannula slide 136 forward. In the fired mode, as shown in Figure 7, the springs 186, 188 constantly exert forward biasing forces on the ' slides 138, 136. Accordingly, the first stylet latch on the stylet slide 138 has been removed because the stylet spring 186 prevents the stylet 122 from recoiling when the cannula 120 is fired.
The biopsy instrument 100 can be placed in a ready mode by actuating the cannula actuator 130 and the stylet actuator 132 in three different _ sequences. Referring to Figures 7-9, the first actuating or cocking sequence is the same as de- _ scribed above with reference to.the instrument 10 shown in Figures 2-4 in which the cannula actuator 130 is actuated first and independently of the stylet actuator 132, and subsequently the stylet actuator 132 is actuated.
Referring to Figure 9, the second actuating sequence is simultaneous actuation of the cannula actuator 130 and the stylet actuator 132 by a single finger while the finger contacts both actua-tors 130, 132 simultaneously. The single finger of the single hand is simultaneously placed on both of the finger surfaces 162. The side-by-side location of the actuators 130, 132 allows for the single finger to contact both of the finger surfaces 162.
As the single finger actuates both actuators 130, 132, the stylet 122 and cannula 120 are retracted simultaneously.
The third actuating sequence also simulta neously actuates the cannula actuator 130 and the stylet actuator 132. The third sequence includes a single finger contacting only the finger surface 162 of the stylet actuator 132. Referring to Fig-ures 7 and 9, as the stylet actuator 132 is actuat-ed, a wall 190 on the stylet actuator 132 engages a projection 192 on the cannula actuator 130. The projection 192 is shown in Figure 8. Accordingly, as the stylet actuator 132 slides rearwardly, the cannula actuator 130 simultaneously slides rearwar-dly. ' Regardless of which actuation sequence is uti-lized for the instrument shown in Figures 7-9, the stylet 122 cannot be retracted prior to retraction WO 96/39941 PCT/us96/o7515 of the cannula 120. This prevents a captured tissue sample from being dragged along the inside of the cannula 120 and damaged. The three actuat-ing sequences provide medical personnel with flexi-bility in placing the biopsy instrument 100 in a ready mode, while, preventing retraction of the stylet 122 prior to retraction of the cannula 120.
While the preferred embodiments have been illustrated and described, numerous changes and l0 modifications can be made without significantly departing from the spirit and scope of this inven-tion. Therefore, the inventors intend that such changes and modifications be covered by the append-ed claims.
Therefore, needs exist to improve biopsy devices.
Particularly, needs exist to improve automated biopsy instruments especially useful for minimally invasive medical procedures to obtain soft tissue biopsy samples. The present invention satisfies these and other needs to improve biopsy devices.
Other aspects and advantages of the present invention will become apparent after reading this disclosure, including the claims, and reviewing the accompanying drawings.
Summary of the Invention The present invention provides automated biopsy instruments especially useful for improving minimum invasive medical procedures to obtain soft tissue biopsy samples.
The biopsy instruments provide side-by-side actuators which retract a stylet and a cannula in specific sequences. The retraction sequences include cannula retraction with subsequent stylet retraction, and simultaneous cannula and stylet retraction. The side-by-side design of the cannula and stylet actuators allow the biopsy instrument to be operated with a single human hand without repositioning the hand.
More specifically the invention provides a biopsy device comprising: a housing; a cannula slidably extending from the housing through an opening; a stylet slidably positioned within the cannula; a stylet. actuator associated with the stylet to retract the stylet within the housing;
and; a cannula actuator associated with the cannula to -4a-retract the cannula within the housing, the cannula actuator juxtaposed the stylet actuator; wherein the stylet actuator is adapted to be actuated with a single finger of a single hand while the hand is in a first position holding the biopsy device, and the cannula actuator is adapted to be actuated by the same single finger while the hand remains in the first position.
The invention also provides the biopsy device comprising: a cannula permanently secured within a housing and slidably extending through a first end of the housing; a stylet permanently secured within the housing and slidably extending through the first end within the cannula; and, a spring biasable against the stylet and the cannula to slide the stylet and the cannula toward the first end; further comprising: an engagement mechanism attached to the spring, the engagement mechanism alternatively interlockable with a stylet slide attached to the stylet and abuttable with a cannula slide attached to the cannula; and a ramp connected to the housing and wherein the engagement mechanism comprises a cam surface which cams along the ramp to alternatively interlock and release the engagement mechanism with the stylet slide.
The invention also provides a biopsy device comprising: a stylet slidably positioned within a cannula, wherein the stylet and the cannula are biased toward one end of the biopsy device by at least one spring; a stylet actuator associated with the stylet to move the stylet from a first stylet position to a second stylet position; and, a cannula actuator associated with the cannula to move the cannula from a first cannula position to a second cannula position; wherein the stylet and cannula actuators are positioned transversely side-by-side each other such that the stylet actuator is adapted to be actuated with a single -4b-finger of a single hand while the hand is in a first position holding the biopsy device, and the cannula actuator is adapted to be actuated by the same single finger while the hand remains in the first position.
The invention further provides a method of firing a biopsy device comprising the steps of: providing a slidable cannula at a first cannula position and a slidable stylet within the cannula at a first stylet position; moving the stylet from the first stylet position to a second stylet position by a biasing force of a spring; moving the cannula from the first cannula position t,o a second cannula position simultaneously during a portion of the stylet movement; and, moving the cannula from the second cannula position to a third cannula position by the biasing force of the spring.
The biopsy instruments may include a single spring or two springs to sequentially fire the stylet and the cannula. A constant force spring is utilized in the single spring embodiment. The single spring embodiment also includes an engagement mechanism connected to the constant force spring. The engagement mechanism first fires the stylet, initiates concurrent cannula firing, and then completes cannula firing. The biopsy device provides a time delay to allow tissue to more WO 96/39941 PCT/tJS96/U75IS
effectively prolapse into the stylet tissue sample recess.
A safety cover is also provided to prevent accidental firing of the biopsy instrument.
brief Description of the Drawings Figure 1 is a perspective view of a biopsy instrument made in accordance with the principles of the present invention.
Figure 2 is a cross-sectional, perspective view of a biopsy instrument made in accordance with the principles of the present invention.
Figure 3 is a cross-sectional view of the biopsy instrument of Figure 2 in a cannula retract-ed mode.
Figure 4 is a cross-sectional view of the biopsy instrument of Figure 2 in a cannula and stylet retracted mode.
Figure 5 is an enlarged, cross-sectional view of an interlocking mechanism.
Figure 6 is an exploded, perspective view of an alternative embodiment of a biopsy instrument made in accordance with the principles of the present invention.
Figure 7 is a perspective view of another alternative embodiment of a biopsy instrument made in accordance with the principles of the present invention.
Figure 8 is a perspective view of the biopsy instrument of Figure 7 in a cannula retracted mode.
Figure 9 is a perspective, partial cross-sec tional view of the biopsy instrument of Figure 7 in a cannula and stylet retracted mode.
Detailed Description of the Invention Although the present invention can be made in many different forms, the preferred embodiments are described in this disclosure and shown in the attached drawings. This disclosure exemplifies the principles of the present invention and does not limit the broad aspects of the invention only to the illustrated embodiments.
Figure 1 shows a perspective view of a biopsy instrument 10 made in accordance with the princi- , ples of the present invention. The biopsy instru-ment 10 includes a housing 12 having a left housing 14 and a right housing 16. The housing could be made from other components, for example, an upper housing and a lower housing as shown in Figure 6.
Referring to Figure 1, preferably, the housing 12 is ergonomically designed to conform to the human hand and may include one or more finger rests 18.
The ergonomic design includes a housing shape that coincides with contours of the human hand and is comfortable to hold. The biopsy instrument 10 also includes a cannula actuator 30, a stylet actuator 32, and a safety cover 34 as described below.
A cannula 20 and a stylet 22 are slidably con tained within the housing 12 and extend out of an opening 24 in a housing end 26. The cannula 20 is a hollow needle having a sharp, openend. The stylet 22 is a solid needle having a pointed end and a tissue sample recess 28. The recess 28 is shown in Figure 3. The stylet 22 is slidably posi-tioned within the cannula 20 and extends beyond the cannula end.
Figure 2 shows a cross-sectional, perspective view of a biopsy instrument 10 made in accordance with the principles of the present invention. The cannula 20 and the stylet 22 are permanently at-tached to two self-guided slides, a cannula slide ' 36 and a stylet slide 38, respectively. The cannu-la and stylet slides 36, 38 are axially slidable on ' a guide 40 connected to the housing 12. There may be two guides 40, one guide 40 on each half of the housing. The stylet slide 38 is slidable between a WO 96/39941 PCT/US96/~75I5 _7_ rear stop block 42 and a middle stop block 44, and the cannula slide 36 is slidable between the middle stop block 44 and a front stop block 46.
The front, middle, and rear stop blocks 42, 44, 46 are permanently secured to the housing 12 at their respective locations.
Accordingly, the stylet slide 38 is slidable between a first position adjacent the rear stop block 42 and a second position adjacent the middle stop block 44. The cannula slide 36 is slidable between a f first position adj acent the middle stop block 44 and a second position adjacent the front stop block 46. When the stylet slide 38 and the cannula slide 36 are in their first positions, a portion of the stylet 22 and a portion of the cannula 20 are retracted into the instrument 10.
When the stylet slide 38 and the cannula slide 36 are in their second positions, the stylet 22 and cannula 20 are advanced out of the instrument 10.
A constant force spring 48 provides the driv-ing force for the stylet 22 and the cannula 20.
The constant force spring 48 maintains a constant speed of travel for both the stylet 22 and the cannula 20. The constant force spring 48 is a rotatable and flexible spring coil. Also one or more constant force springs 48 can be utilized by connecting the multiple springs at their non-coiled ends. Accordingly, multiple springs 48 having relatively small coil diameters can be utilized to supply the same force as a single spring 48 having a relatively larger coil diameter. The coiled end of the spring 48 is secured to the housing 12 and the free end of the spring 48 slidably extends through a passageway 50 in the cannula slide 36 and is attached to an engagement mechanism 52.
The engagement mechanism 52 includes an inter-lock end 54 and a cam surface 56. The cam surface -g-56 of the engagement mechanism 52 cams along a ramp 58 to alternatively interlock and release the interlock end 54 with the stylet slide 38 as de-scribed in detail below: The engagement mechanism 52 may include multiple cam surfaces 56 that cam , along multiple spaced apart ramps 58, as shown more clearly in Figure 6, for example.
Referring to Figure 2, the cannula actuator 30 and the stylet actuator 32 are independent and slidably extend along the housing 12 and through a housing opening 60. The stylet actuator 32 and the cannula actuator are juxtaposed. Particularly, the cannula actuator 30 and the stylet actuator 32 are positioned side-by-side each other to permit actua-tion of both actuators 30, 32 by a single finger of a single hand without repositioning the hand. The actuators 30, 32 provide a mechanism to place the biopsy device 10 in a ready mode as described in detail below. The actuators 30, 32 include a finger surface 62 which can be contacted by a single finger of a single human hand to actuate (slide) the actuators 30, 32. A projection 64 on the stylet slide 38 engages the stylet actuator 32.
Likewise, a projection 66 on the cannula slide 36 engages the cannula actuator 30.
A spring loaded firing trigger 68 is provided at a distal end 70 of the instrument 10 opposite of the proximal front end 26. The firing trigger 68 is pressed to fire the instrument 10. Particular-1y, the firing trigger 68 fires and releases the stylet 22 as described below. The hinged safety cover 34 (shown in Figure 1) is provided to prevent ' accidental firing of the instrument. The safety cover 34 can be moved between a first position ' covering the firing trigger 68 and a second posi-tion allowing access to the firing trigger 68. The firing trigger 68 could be placed at any location on the instrument 10, including the proximal front end, and an appropriate mechanism provided to fire the instrument 10.
Operation of the biopsy instrument 10 will be described with reference to Figures 2-5. Initial-ly, Figure 2 shows the instrument 10 in a fired mode. The biopsy instrument 10 is placed in a ready mode by holding the instrument 10 in a single hand in a first position and actuating the cannula actuator 30 and the stylet actuator 32 to retract the cannula 20 and the stylet 22.
Referring to Figure 3, a cross-sectional view of the biopsy instrument 10 in a cannula retracted mode is shown. First, the cannula actuator 30 is retracted rearwardly by a finger of the same single hand contacting the finger surface 62. The cannula actuator 30 engages the projection 66 on the cannu-la slide 36 and slides the cannula slide 36 and the cannula 20 rearwardly against the force of the con-stant force spring 48. The engagement mechanism 52 is abutted against the cannula slide 36 and thus, the spring 48 is uncoiled as the cannula actuator 30 is actuated.
Figure 5 shows an enlarged, cross-sectional view of an interlocking mechanism in three stages.
The first stage is shown where the cannula slide 36 retracts, the cam surface 56 of the engagement mechanism 52 is advanced and elevated along a first cam surface 58a of the ramp 58. The second stage is when the cam surface 56 slides along a horizon-tal ramp surface 58c. The interlock end 54 of the engagement mechanism 52 is guided into a lock 72 on the stylet slide. The third stage is shown as the engagement mechanism cam surface 56 advances and descends along a second cam surface 58b of the ramp 58; the interlock end 54 releasably locks to the lock 72 of the stylet slide 38.
Referring to Figure 3, the cannula slide 36 contacts a first stylet latch 74 and releases the stylet slide 38 from being latched to the middle stop block 44. The first stylet latch 74 is shown in Figure 4 unlatched to the middle stop block 44. , As shown in Figure 3, a cannula latch 76 latches the cannula slide 36 to the middle stop block 44.
In this position of the instrument 10, the cannula 20 is retracted and the stylet tissue sample recess 28 is exposed. If a tissue sample had previously been captured within the recess 28, the tissue sample could now be expelled.
Referring to Figure 4, a cross-sectional view of the biopsy instrument 10 in a cannula and stylet retracted mode (instrument ready for firing mode) is shown. Second, while the same single hand remains in its first position on the instrument 10, the stylet actuator 32 is retracted rearwardly by the same finger contacting the finger surface 62 on the stylet actuator 32. The stylet actuator 32 engages the projection 64 on the stylet slide 38 and slides the stylet slide 38 and the stylet 22 rearwardly against the force of the constant force spring 48. The engagement mechanism 52 is locked to the stylet slide 38 and thus, the spring 48 is further uncoiled as the stylet actuator 32 is actuated. A second stylet latch 78 latches the stylet slide 38 to the rear stop block 42. In this position of the instrument 10, both the cannula 20 and the stylet 22 are retracted and the biopsy instrument 10 is ready for firing.
In the ready mode, the stylet 22 and the cannula 20 are inserted into a patient in the area where a tissue sample is desired.
The biopsy instrument 10 is fired by moving the safety cover 34 at the rear end 70 of the housing 12 away from the spring loaded trigger 68 _ _ _ _ and depressing the trigger 68. The trigger 68 releases the second stylet latch 78 and the spring 48 propels the stylet side 38 and the stylet 22 forward extending the stylet 22 into the tissue.
The stylet recess 28 is exposed and the tissue pro-lapses into the recess 28. The stylet slide 38 ad-vances forward until it contacts the middle stop block 44, and at that point the first stylet latch 74 latches onto the middle stop block 44. The first stylet latch 74 latches onto the middle stop block 44 to prevent the stylet 22 from recoiling as the cannula 20 advances forward.
As the stylet slide 38 approaches the middle stop block 44, the stylet slide 38 impacts the cannula latch 76 and moves the cannula latch 76 radially outward and axially forward. The forward axial movement of the cannula latch 76 initiates forward movement of the cannula slide 36 and the cannula 20 simultaneously and concurrently with the forward travel of the stylet 22.
As the stylet slide 38 approaches the middle stop block 44, the cam surface 56 of the engagement mechanism 52 is elevated along the ramp second cam surface 58b. After the cannula 20 has started its forward motion, the interlock end 54 is elevated sufficiently to be released from the stylet slide lock 72.
The engagement mechanism 52 continues to travel forwardly under the force of the spring 48 and abuts the cannula slide 36. The constant force spring 48 advances the cannula slide 36 and the cannula 22 until the cannula slide 36 contacts the front stop block 46. After the concurrent stylet 22 and cannula 20 motion, the cannula 20 briefly stops until the spring 48 resumes movement of the cannula 20. For example, there may be approximate-ly a millisecond time delay. The time delay pro-vided by the engagement mechanism 52 and the ramp 58 allows additional time for the tissue to pro-lapse into the stylet recess 28.
As the cannula 20 advances over the stylet 22, the cannula 20 severs the tissue and captures a tissue sample within the recess. After the tissue sample is captured, the biopsy instrument 10 is re moved from the patient. The cannula 20 can be re tracted as discussed above to expose the tissue sample and remove the sample from the biopsy in-strument 10.
The biopsy instrument 10 only permits a spe-cific actuation sequence of the cannula 20 and the stylet 22. The cannula 20 must be retracted prior to retraction of the stylet 22 because in the fired mode, the stylet slide 38 is latched to the middle stop block 44. The stylet slide 38 is unlatched from the middle stop block 44 only by the cannula slide 36 contacting the first stylet latch 74.
This prevents a captured tissue sample from being dragged along the inside of the cannula 20 and dam-aged. In other words, the cannula actuator 30 is actuated independently of the stylet actuator 32, and subsequently the stylet actuator 32 is actuat-ed. The cannula actuator 30 and the stylet actua-tor 32 return to their forward positions as shown in Figure 1 as the stylet 22 and the cannula 20 are fired.
Figure 6 shows an exploded, perspective view of an alternative embodiment of a biopsy instrument 10 made in accordance with the principles of the present invention. Components of the alternative biopsy instrument 10 shown in Figure 6 are identi fied by the same reference numerals as used in ' Figures 1-5.
The biopsy instrument 10 shown in Figure 6 includes an upper housing 14 and a lower housing WO 96/39941 PCT/c7s96/o75i5 16. A guide 40 is a separate component from the housing. The stylet slide 38 and the cannula slide 36 slide along the guide.40. The front stop block 46, the middle stop block 44, and the rear stop . 5 block 42 are attached to the guide 40 in their respective locations. The cannula actuator 30 and the stylet actuator 32 slide on an actuator support 80. The actuator support 80 includes two slots 82, 84. The projection 64 on the stylet slide 38 ex-tends through and slides along the slot 82 such that the stylet actuator 32 engages the stylet slide 38. Likewise, the projection 66 on the cannula slide 36 extends through and slides along the slot 84 such that the cannula actuator 30 engages the cannula slide 36.
Figure 7 shows a perspective view of the internal components of an alternative embodiment of a biopsy instrument 100 made in accordance with the principles of the present invention. Components of the alternative biopsy instrument 100 which are similar to the components in biopsy instrument 10 of Figure 2 are identified by corresponding numer-als in the 100 series.
The biopsy instrument 100 includes two springs, a stylet spring 186 and a cannula spring 188. The stylet spring 186 is positioned between the rear stop block 142 and the stylet slide 138, and biases the stylet slide 138 forward. Likewise, the cannula spring 188 is positioned between the middle stop block 144 and the cannula slide 136, and biases the cannula slide 136 forward. In the fired mode, as shown in Figure 7, the springs 186, 188 constantly exert forward biasing forces on the ' slides 138, 136. Accordingly, the first stylet latch on the stylet slide 138 has been removed because the stylet spring 186 prevents the stylet 122 from recoiling when the cannula 120 is fired.
The biopsy instrument 100 can be placed in a ready mode by actuating the cannula actuator 130 and the stylet actuator 132 in three different _ sequences. Referring to Figures 7-9, the first actuating or cocking sequence is the same as de- _ scribed above with reference to.the instrument 10 shown in Figures 2-4 in which the cannula actuator 130 is actuated first and independently of the stylet actuator 132, and subsequently the stylet actuator 132 is actuated.
Referring to Figure 9, the second actuating sequence is simultaneous actuation of the cannula actuator 130 and the stylet actuator 132 by a single finger while the finger contacts both actua-tors 130, 132 simultaneously. The single finger of the single hand is simultaneously placed on both of the finger surfaces 162. The side-by-side location of the actuators 130, 132 allows for the single finger to contact both of the finger surfaces 162.
As the single finger actuates both actuators 130, 132, the stylet 122 and cannula 120 are retracted simultaneously.
The third actuating sequence also simulta neously actuates the cannula actuator 130 and the stylet actuator 132. The third sequence includes a single finger contacting only the finger surface 162 of the stylet actuator 132. Referring to Fig-ures 7 and 9, as the stylet actuator 132 is actuat-ed, a wall 190 on the stylet actuator 132 engages a projection 192 on the cannula actuator 130. The projection 192 is shown in Figure 8. Accordingly, as the stylet actuator 132 slides rearwardly, the cannula actuator 130 simultaneously slides rearwar-dly. ' Regardless of which actuation sequence is uti-lized for the instrument shown in Figures 7-9, the stylet 122 cannot be retracted prior to retraction WO 96/39941 PCT/us96/o7515 of the cannula 120. This prevents a captured tissue sample from being dragged along the inside of the cannula 120 and damaged. The three actuat-ing sequences provide medical personnel with flexi-bility in placing the biopsy instrument 100 in a ready mode, while, preventing retraction of the stylet 122 prior to retraction of the cannula 120.
While the preferred embodiments have been illustrated and described, numerous changes and l0 modifications can be made without significantly departing from the spirit and scope of this inven-tion. Therefore, the inventors intend that such changes and modifications be covered by the append-ed claims.
Claims (29)
1. A biopsy device comprising:
a housing:
a cannula slidably extending from the housing through an opening;
a stylet slidably positioned within the cannula;
a stylet actuator associated with the stylet to retract the stylet within the housing; and;
a cannula actuator associated with the cannula to retract the cannula within the housing, the cannula actuator juxtaposed the stylet actuator;
wherein the stylet actuator is adapted to be actuated with a single finger of a single hand whale the hand is in a first position holding the biopsy device, and the cannula actuator is adapted to be actuated by the same single finger while the hand remains in the first position.
a housing:
a cannula slidably extending from the housing through an opening;
a stylet slidably positioned within the cannula;
a stylet actuator associated with the stylet to retract the stylet within the housing; and;
a cannula actuator associated with the cannula to retract the cannula within the housing, the cannula actuator juxtaposed the stylet actuator;
wherein the stylet actuator is adapted to be actuated with a single finger of a single hand whale the hand is in a first position holding the biopsy device, and the cannula actuator is adapted to be actuated by the same single finger while the hand remains in the first position.
2. The biopsy device of claim 1 further comprising means contained within the housing for biasing the stylet and the cannula toward a first end of the housing.
3. The biopsy device of claim 2 wherein the means for biasing comprises a first means for biasing the stylet and a second means for biasing the cannula.
4. The biopsy device of claim 3 wherein the first means for biasing is a first spring, and the second means for biasing is a second spring.
5. The biopsy device of claim 2 wherein the means for biasing is a single spring.
6. The biopsy device of claim 5 wherein the single spring is a constant force spring.
7. The biopsy device of any one of claims 1 to 6 wherein the stylet actuator and the cannula actuator are slidable along a longitudinal axis of the housing.
8. The biopsy device of claim 7 wherein the stylet and cannula actuators have juxtaposed sides positioned longitudinally side-by-side each other.
9. The biopsy device of any one of claims 1 to 8 wherein the stylet actuator and the cannula actuator are actuatable in three sequences:
a first sequence wherein the cannula actuator is actuated independently of the stylet actuator and subsequently the stylet actuator is actuated;
a second sequence wherein the cannula actuator and the stylet actuator are actuated simultaneously; and, a third sequence wherein the stylet actuator is actuated and engages the cannula actuator such that the cannula actuator is actuated simultaneously with the stylet actuator.
a first sequence wherein the cannula actuator is actuated independently of the stylet actuator and subsequently the stylet actuator is actuated;
a second sequence wherein the cannula actuator and the stylet actuator are actuated simultaneously; and, a third sequence wherein the stylet actuator is actuated and engages the cannula actuator such that the cannula actuator is actuated simultaneously with the stylet actuator.
10. The biopsy device of any one of claims 1 to 8 wherein the stylet actuator and the cannula actuator are actuatable in a single sequence by a single finger of a single hand, the single sequence comprising actuation of the cannula actuator and subsequent actuation of the stylet actuator.
11. The biopsy device of any one of claims 1 to 10 further comprising:
a cannula slide attached to the cannula, the cannula actuator engagable with the cannula slide to retract the cannula; and, a stylet slide attached to the stylet, the stylet actuator engagable with the stylet slide to retract the stylet.
a cannula slide attached to the cannula, the cannula actuator engagable with the cannula slide to retract the cannula; and, a stylet slide attached to the stylet, the stylet actuator engagable with the stylet slide to retract the stylet.
12. The biopsy device of claim 11 wherein the stylet actuator engages the cannula actuator when the stylet actuator is actuated.
13. The biopsy device of claim 2 further comprising a trigger engagable with a latch associated with the stylet to release the stylet from a latched position wherein the means for biasing advances the stylet toward the first end of the housing.
14. The biopsy device of claim 13 further comprising a safety cover connected to the housing and moveable from a safety position which prevents movement of the trigger to a firing position which allows movement of the trigger.
15. A biopsy device comprising:
a cannula permanently secured within a housing and slidably extending through a first end of the housing;
a stylet permanently secured within the housing and slidably extending through the first end within the cannula; and, a spring biasable against the stylet and the cannula to slide the stylet and the cannula toward the first of the housing;
further comprising:
an engagement mechanism attached to the spring, the engagement mechanism alternatively interlockable with a stylet slide attached to the stylet and abuttable with a cannula slide attached to the cannula; and a ramp connected to the housing and wherein the engagement mechanism comprises a cam surface which cams along the ramp to alternatively interlock and release the engagement mechanism with the stylet slide.
a cannula permanently secured within a housing and slidably extending through a first end of the housing;
a stylet permanently secured within the housing and slidably extending through the first end within the cannula; and, a spring biasable against the stylet and the cannula to slide the stylet and the cannula toward the first of the housing;
further comprising:
an engagement mechanism attached to the spring, the engagement mechanism alternatively interlockable with a stylet slide attached to the stylet and abuttable with a cannula slide attached to the cannula; and a ramp connected to the housing and wherein the engagement mechanism comprises a cam surface which cams along the ramp to alternatively interlock and release the engagement mechanism with the stylet slide.
16. The biopsy device of claim 15 further comprising:
a cannula actuator engagable with the cannula to move the cannula from a first position to a second position;
and, a stylet actuator engagable with the stylet to move the stylet from a first position to a second position.
a cannula actuator engagable with the cannula to move the cannula from a first position to a second position;
and, a stylet actuator engagable with the stylet to move the stylet from a first position to a second position.
17. The biopsy device of claim 15 wherein the stylet slide attached to the stylet is slidable between a first position adjacent a rear stop block and a second position adjacent a middle stop block; and, the cannula slide attached to the cannula is slidable between a first position adjacent the middle stop block and a second position adjacent a front stop block.
18. The biopsy device of claim 15 further comprising a trigger engagable with a latch associated with the stylet to release the stylet from a latched position wherein the spring advances the stylet toward the first end of the housing.
19. The biopsy device of claim 18 further comprising a safety cover connected to the housing and moveable from a safety position which prevents movement of the trigger to a firing position which allows movement of the trigger.
20. The biopsy device of any one of claims 15 to 19 wherein the spring comprises at least one constant force spring.
21. The biopsy device of claim 20 comprising two spaced apart ramps and wherein the engagement mechanism cams along both ramps.
22. A biopsy device comprising:
a stylet slidably positioned within a cannula;
a stylet actuator associated with the stylet to move the stylet from a first stylet position to a second stylet position; and, a cannula actuator associated with the cannula to move the cannula from a first cannula position to a second cannula position;
wherein the stylet actuator is adapted to be actuated with a single finger of a single hand while the hand is in a first position holding the biopsy device, and the cannula actuator is adapted to be actuated by the same single finger while the hand remains in the first position.
a stylet slidably positioned within a cannula;
a stylet actuator associated with the stylet to move the stylet from a first stylet position to a second stylet position; and, a cannula actuator associated with the cannula to move the cannula from a first cannula position to a second cannula position;
wherein the stylet actuator is adapted to be actuated with a single finger of a single hand while the hand is in a first position holding the biopsy device, and the cannula actuator is adapted to be actuated by the same single finger while the hand remains in the first position.
23. A method of firing a biopsy device comprising the steps of:
providing a slidable cannula at a first cannula position and a slidable stylet within the cannula at a first stylet position;
moving the stylet from the first stylet position to a second stylet position by a biasing force of a spring;
moving the cannula from the first cannula position to a second cannula position simultaneously during a portion of the stylet movement; and, moving the cannula from the second cannula position to a third cannula position by the biasing force of the spring.
providing a slidable cannula at a first cannula position and a slidable stylet within the cannula at a first stylet position;
moving the stylet from the first stylet position to a second stylet position by a biasing force of a spring;
moving the cannula from the first cannula position to a second cannula position simultaneously during a portion of the stylet movement; and, moving the cannula from the second cannula position to a third cannula position by the biasing force of the spring.
24. A biopsy device comprising:
a stylet slidably positioned within a cannula, wherein the stylet and the cannula are biased toward one end of the biopsy device by at least one spring;
a stylet actuator associated with the stylet to move the stylet from a first stylet position to a second stylet position; and, a cannula actuator associated with the cannula to move the cannula from a first cannula position to a second cannula position;
wherein the stylet and cannula actuators are positioned transversely side-by-side each other such that the stylet actuator is adapted to be actuated with a single finger of a single hand while the hand is in a first position holding the biopsy device, and the cannula actuator is adapted to be actuated by the same single finger while the hand remains in the first position.
a stylet slidably positioned within a cannula, wherein the stylet and the cannula are biased toward one end of the biopsy device by at least one spring;
a stylet actuator associated with the stylet to move the stylet from a first stylet position to a second stylet position; and, a cannula actuator associated with the cannula to move the cannula from a first cannula position to a second cannula position;
wherein the stylet and cannula actuators are positioned transversely side-by-side each other such that the stylet actuator is adapted to be actuated with a single finger of a single hand while the hand is in a first position holding the biopsy device, and the cannula actuator is adapted to be actuated by the same single finger while the hand remains in the first position.
25. The biopsy device of claim 24 wherein the at least one spring is attached to an engagement mechanism which releasably interlocks with the stylet.
26. A biopsy device as claimed in claim 24 including a force generator engagable with the stylet and the cannula, wherein the stylet and the cannula are driven outward from the housing by forces released from the force generator.
27. The biopsy device of claim 26 wherein the force generator comprises a first force generator engagable with the stylet and a second force generator engagable with the cannula.
28. The biopsy device of claim 26 wherein the force generator is a single spring.
29. The biopsy device of any one of claims 26 to 28 further comprising a trigger engagable with a latch associated with the stylet to release the stylet from a latched position.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US08/474,756 | 1995-06-07 | ||
| US08/474,756 US5779647A (en) | 1995-06-07 | 1995-06-07 | Automated biopsy instruments |
| PCT/US1996/007515 WO1996039941A2 (en) | 1995-06-07 | 1996-05-23 | Automated biopsy instruments |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2223415A1 CA2223415A1 (en) | 1996-12-19 |
| CA2223415C true CA2223415C (en) | 2003-07-29 |
Family
ID=23884812
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002223415A Expired - Lifetime CA2223415C (en) | 1995-06-07 | 1996-05-23 | Automated biopsy instruments |
Country Status (8)
| Country | Link |
|---|---|
| US (2) | US5779647A (en) |
| EP (1) | EP0831743B1 (en) |
| JP (1) | JPH11506634A (en) |
| AT (1) | ATE245940T1 (en) |
| CA (1) | CA2223415C (en) |
| DE (1) | DE69629293T2 (en) |
| ES (1) | ES2203705T3 (en) |
| WO (1) | WO1996039941A2 (en) |
Families Citing this family (99)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| IT1292837B1 (en) * | 1997-04-03 | 1999-02-11 | Alberto Bauer | SURGICAL APPARATUS FOR BIOPSY. |
| US6142955A (en) | 1997-09-19 | 2000-11-07 | United States Surgical Corporation | Biopsy apparatus and method |
| US6019733A (en) | 1997-09-19 | 2000-02-01 | United States Surgical Corporation | Biopsy apparatus and method |
| US6050955A (en) | 1997-09-19 | 2000-04-18 | United States Surgical Corporation | Biopsy apparatus and method |
| US7637948B2 (en) | 1997-10-10 | 2009-12-29 | Senorx, Inc. | Tissue marking implant |
| US8668737B2 (en) | 1997-10-10 | 2014-03-11 | Senorx, Inc. | Tissue marking implant |
| US6193673B1 (en) | 1998-02-20 | 2001-02-27 | United States Surgical Corporation | Biopsy instrument driver apparatus |
| US6283925B1 (en) * | 1998-05-12 | 2001-09-04 | Medical Device Technologies, Inc. | Biopsy needle handle |
| US6540725B1 (en) * | 1998-06-04 | 2003-04-01 | Biosense Webster, Inc. | Injection catheter with controllably extendable injection needle |
| US6575931B1 (en) * | 1998-06-04 | 2003-06-10 | Biosense Webster, Inc. | Catheter with injection needle |
| US6905476B2 (en) * | 1998-06-04 | 2005-06-14 | Biosense Webster, Inc. | Catheter with injection needle |
| US6623473B1 (en) * | 1998-06-04 | 2003-09-23 | Biosense Webster, Inc. | Injection catheter with multi-directional delivery injection needle |
| US8079982B1 (en) | 1998-06-04 | 2011-12-20 | Biosense Webster, Inc. | Injection catheter with needle electrode |
| US7416547B2 (en) | 1999-03-29 | 2008-08-26 | Biosense Webster Inc. | Injection catheter |
| US20010047183A1 (en) * | 2000-04-05 | 2001-11-29 | Salvatore Privitera | Surgical device for the collection of soft tissue |
| US20080146965A1 (en) * | 2003-08-11 | 2008-06-19 | Salvatore Privitera | Surgical Device for The Collection of Soft Tissue |
| CA2287087C (en) | 1998-10-23 | 2007-12-04 | Ethicon Endo-Surgery, Inc. | Surgical device for the collection of soft tissue |
| EP1133260A4 (en) | 1998-11-25 | 2003-02-05 | United States Surgical Corp | Biopsy system |
| US6725083B1 (en) | 1999-02-02 | 2004-04-20 | Senorx, Inc. | Tissue site markers for in VIVO imaging |
| US8498693B2 (en) | 1999-02-02 | 2013-07-30 | Senorx, Inc. | Intracorporeal marker and marker delivery device |
| US6862470B2 (en) | 1999-02-02 | 2005-03-01 | Senorx, Inc. | Cavity-filling biopsy site markers |
| US9820824B2 (en) | 1999-02-02 | 2017-11-21 | Senorx, Inc. | Deployment of polysaccharide markers for treating a site within a patent |
| US7651505B2 (en) | 2002-06-17 | 2010-01-26 | Senorx, Inc. | Plugged tip delivery for marker placement |
| US7983734B2 (en) | 2003-05-23 | 2011-07-19 | Senorx, Inc. | Fibrous marker and intracorporeal delivery thereof |
| US20090030309A1 (en) | 2007-07-26 | 2009-01-29 | Senorx, Inc. | Deployment of polysaccharide markers |
| US8361082B2 (en) | 1999-02-02 | 2013-01-29 | Senorx, Inc. | Marker delivery device with releasable plug |
| US6120462A (en) * | 1999-03-31 | 2000-09-19 | Ethicon Endo-Surgery, Inc. | Control method for an automated surgical biopsy device |
| US6086544A (en) * | 1999-03-31 | 2000-07-11 | Ethicon Endo-Surgery, Inc. | Control apparatus for an automated surgical biopsy device |
| US6575991B1 (en) * | 1999-06-17 | 2003-06-10 | Inrad, Inc. | Apparatus for the percutaneous marking of a lesion |
| DE10042519C1 (en) * | 2000-08-30 | 2002-04-04 | Karlsruhe Forschzent | Biopsy device for MRI use |
| US7458940B2 (en) | 2000-11-06 | 2008-12-02 | Suros Surgical Systems, Inc. | Biopsy apparatus |
| CA2775170C (en) | 2000-11-20 | 2017-09-05 | Senorx, Inc. | An intracorporeal marker delivery system for marking a tissue site |
| US6468226B1 (en) | 2000-11-22 | 2002-10-22 | Mcintyre, Iv John J. | Remote tissue biopsy apparatus and associated methods |
| US10849681B2 (en) | 2001-04-06 | 2020-12-01 | Covidien Ag | Vessel sealer and divider |
| US7101371B2 (en) | 2001-04-06 | 2006-09-05 | Dycus Sean T | Vessel sealer and divider |
| US20060036158A1 (en) | 2003-11-17 | 2006-02-16 | Inrad, Inc. | Self-contained, self-piercing, side-expelling marking apparatus |
| EP2110094B1 (en) * | 2002-11-18 | 2012-06-27 | Bard Peripheral Vascular, Inc. | Apparatus and method for implanting a preloaded localization wire |
| US8137288B2 (en) * | 2002-11-20 | 2012-03-20 | Boston Scientific Scimed, Inc. | Medical instrument |
| US7008382B2 (en) | 2002-11-20 | 2006-03-07 | Scimed Life Systems, Inc. | Medical instrument |
| US7022085B2 (en) | 2002-11-20 | 2006-04-04 | Scimed Life Systems, Inc. | Medical instrument |
| US7063672B2 (en) * | 2003-01-31 | 2006-06-20 | Inter-V Manan | Integrated biopsy needle assembly |
| US7877133B2 (en) | 2003-05-23 | 2011-01-25 | Senorx, Inc. | Marker or filler forming fluid |
| US20050273002A1 (en) | 2004-06-04 | 2005-12-08 | Goosen Ryan L | Multi-mode imaging marker |
| US20050251063A1 (en) * | 2004-05-07 | 2005-11-10 | Raghuveer Basude | Safety device for sampling tissue |
| US8568334B2 (en) * | 2004-05-11 | 2013-10-29 | Inrad, Inc. | Core biopsy device |
| CA2506961C (en) * | 2004-05-11 | 2013-05-07 | Inrad, Inc. | Core biopsy device |
| US20050256426A1 (en) * | 2004-05-12 | 2005-11-17 | William Brugge | Apparatus and method for collecting tissue samples |
| US7828773B2 (en) | 2005-07-11 | 2010-11-09 | Covidien Ag | Safety reset key and needle assembly |
| US7850650B2 (en) | 2005-07-11 | 2010-12-14 | Covidien Ag | Needle safety shield with reset |
| US7905857B2 (en) | 2005-07-11 | 2011-03-15 | Covidien Ag | Needle assembly including obturator with safety reset |
| US8419656B2 (en) * | 2004-11-22 | 2013-04-16 | Bard Peripheral Vascular, Inc. | Post decompression marker introducer system |
| US10357328B2 (en) | 2005-04-20 | 2019-07-23 | Bard Peripheral Vascular, Inc. and Bard Shannon Limited | Marking device with retractable cannula |
| US20060276747A1 (en) | 2005-06-06 | 2006-12-07 | Sherwood Services Ag | Needle assembly with removable depth stop |
| US7731692B2 (en) | 2005-07-11 | 2010-06-08 | Covidien Ag | Device for shielding a sharp tip of a cannula and method of using the same |
| US20070016101A1 (en) * | 2005-07-13 | 2007-01-18 | Feldman Dennis D | Core Biopsy Device |
| US8052658B2 (en) | 2005-10-07 | 2011-11-08 | Bard Peripheral Vascular, Inc. | Drug-eluting tissue marker |
| US7654735B2 (en) | 2005-11-03 | 2010-02-02 | Covidien Ag | Electronic thermometer |
| US8064987B2 (en) | 2006-10-23 | 2011-11-22 | C. R. Bard, Inc. | Breast marker |
| US9579077B2 (en) | 2006-12-12 | 2017-02-28 | C.R. Bard, Inc. | Multiple imaging mode tissue marker |
| US9345457B2 (en) | 2006-12-13 | 2016-05-24 | Devicor Medical Products, Inc. | Presentation of biopsy sample by biopsy device |
| ES2432572T3 (en) | 2006-12-18 | 2013-12-04 | C.R. Bard, Inc. | Biopsy marker with imaging properties generated in situ |
| US9155526B2 (en) | 2007-08-29 | 2015-10-13 | Olympus Corporation | Puncture apparatus with automatic puncture function |
| US8357104B2 (en) | 2007-11-01 | 2013-01-22 | Coviden Lp | Active stylet safety shield |
| WO2009058436A1 (en) * | 2007-11-02 | 2009-05-07 | Sharp Surgical Devices, Inc. | Devices, methods, and kits for a biopsy device |
| US8311610B2 (en) | 2008-01-31 | 2012-11-13 | C. R. Bard, Inc. | Biopsy tissue marker |
| DE102008038413B4 (en) * | 2008-08-19 | 2020-09-03 | Bip Biomed.-Instrumente & Produkte Gmbh | Hand-held biopsy gun |
| US9327061B2 (en) | 2008-09-23 | 2016-05-03 | Senorx, Inc. | Porous bioabsorbable implant |
| US8968210B2 (en) | 2008-10-01 | 2015-03-03 | Covidien LLP | Device for needle biopsy with integrated needle protection |
| US9782565B2 (en) | 2008-10-01 | 2017-10-10 | Covidien Lp | Endoscopic ultrasound-guided biliary access system |
| US9186128B2 (en) | 2008-10-01 | 2015-11-17 | Covidien Lp | Needle biopsy device |
| US11298113B2 (en) | 2008-10-01 | 2022-04-12 | Covidien Lp | Device for needle biopsy with integrated needle protection |
| US9332973B2 (en) | 2008-10-01 | 2016-05-10 | Covidien Lp | Needle biopsy device with exchangeable needle and integrated needle protection |
| EP3005971B1 (en) | 2008-12-30 | 2023-04-26 | C. R. Bard, Inc. | Marker delivery device for tissue marker placement |
| WO2010138940A2 (en) * | 2009-05-28 | 2010-12-02 | Angiotech Pharmaceuticals Inc. | Biopsy device handle |
| US8162965B2 (en) * | 2009-09-09 | 2012-04-24 | Tyco Healthcare Group Lp | Low profile cutting assembly with a return spring |
| US9078638B2 (en) * | 2009-10-02 | 2015-07-14 | Howmedica Osteonics Corp. | Bone marrow aspirator and methods therefor |
| US8764680B2 (en) * | 2010-11-01 | 2014-07-01 | Devicor Medical Products, Inc. | Handheld biopsy device with needle firing |
| US9668718B2 (en) | 2011-06-03 | 2017-06-06 | Theragenics Corporation | Methods and apparatus for tissue removal |
| WO2012167216A2 (en) * | 2011-06-03 | 2012-12-06 | Theragenics Corporation | Methods and apparatus for tissue removal |
| US9486186B2 (en) * | 2011-12-05 | 2016-11-08 | Devicor Medical Products, Inc. | Biopsy device with slide-in probe |
| WO2013107693A1 (en) * | 2012-01-16 | 2013-07-25 | Coloplast A/S | Device for taking at least one sample of tissue |
| WO2014081812A1 (en) | 2012-11-21 | 2014-05-30 | C.R. Bard, Inc. | Core needle biopsy device |
| EP3868304A1 (en) * | 2013-01-18 | 2021-08-25 | Merit Medical Systems, Inc. | Biopsy device with transfer of kinetic energy to the needle assembly |
| USD715442S1 (en) | 2013-09-24 | 2014-10-14 | C. R. Bard, Inc. | Tissue marker for intracorporeal site identification |
| USD716451S1 (en) | 2013-09-24 | 2014-10-28 | C. R. Bard, Inc. | Tissue marker for intracorporeal site identification |
| USD716450S1 (en) | 2013-09-24 | 2014-10-28 | C. R. Bard, Inc. | Tissue marker for intracorporeal site identification |
| USD715942S1 (en) | 2013-09-24 | 2014-10-21 | C. R. Bard, Inc. | Tissue marker for intracorporeal site identification |
| US10206664B2 (en) | 2013-11-13 | 2019-02-19 | Cook Medical Technologies Llc | Spiral cut biopsy cannula |
| EP3073932B1 (en) | 2013-11-26 | 2018-08-22 | Hologic Inc. | Biopsy device arming mechanism |
| JP5789692B1 (en) * | 2014-04-02 | 2015-10-07 | 株式会社タスク | Biopsy device that can be charged with relatively little force |
| US9433340B2 (en) | 2014-05-30 | 2016-09-06 | Endoscopic Innovations LLC | System and method for rapid shuttling of tools through endoscopes |
| US10098628B2 (en) | 2014-07-22 | 2018-10-16 | Cook Medical Technologies Llc | Anchor deployment system, device, and method of treatment |
| US9707012B2 (en) | 2015-07-31 | 2017-07-18 | Polygon Medical, Inc. | Polypectomy systems, devices, and methods |
| WO2018071530A1 (en) * | 2016-10-12 | 2018-04-19 | Devicor Medical Products, Inc. | Core needle biopsy device for collecting multiple samples in a single insertion |
| US10918407B2 (en) | 2016-11-08 | 2021-02-16 | Covidien Lp | Surgical instrument for grasping, treating, and/or dividing tissue |
| US10709429B2 (en) | 2016-12-05 | 2020-07-14 | Argon Medical Devices Inc. | Biopsy device handle |
| US10285731B2 (en) | 2017-06-14 | 2019-05-14 | Polygon Medical, Inc. | Polypectomy systems, devices, and methods |
| USD847992S1 (en) | 2017-06-27 | 2019-05-07 | Polygon Medical, Inc. | Medical device handle |
| CN212816352U (en) * | 2020-03-27 | 2021-03-30 | 普昂(杭州)医疗科技有限公司 | Biopsy device |
Family Cites Families (147)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US387761A (en) * | 1888-08-14 | Top-spinning toy spring-gun | ||
| US845792A (en) * | 1906-12-03 | 1907-03-05 | Luther Edward Jenkins | Knife. |
| US1246258A (en) * | 1917-07-26 | 1917-11-13 | Gaetano Gerace | Disappearing bayonet. |
| US1347622A (en) * | 1919-03-29 | 1920-07-27 | Arthur E Deininger | Vaccine-injector |
| US1434388A (en) * | 1920-11-08 | 1922-11-07 | Joseph O Hughes | Knife |
| US1867624A (en) * | 1930-04-01 | 1932-07-19 | Memorial Hospital For The Trea | Device for obtaining biopsy specimens |
| US2198111A (en) * | 1938-11-01 | 1940-04-23 | Dimgor Corp | Fur knife |
| US2426535A (en) * | 1944-10-21 | 1947-08-26 | Turkel Henry | Infusion and biopsy needle |
| GB683814A (en) | 1949-10-11 | 1952-12-03 | D M W Motorcycles Wolverhampto | Rotary valves and combustion chambers of internal combustion engines |
| US2623521A (en) * | 1951-03-12 | 1952-12-30 | Rose Shaw | Indicating stylet needle |
| US2689562A (en) * | 1951-05-15 | 1954-09-21 | Becton Dickinson Co | Blood donor assembly |
| US2632949A (en) * | 1951-09-17 | 1953-03-31 | Falcone Pasquale | Knife |
| US2659369A (en) * | 1952-11-13 | 1953-11-17 | Michael G Lipman | Pellet implanter |
| US2705949A (en) * | 1953-08-25 | 1955-04-12 | Silverman Irving | Biopsy needle |
| US2839049A (en) * | 1954-03-25 | 1958-06-17 | Kenneth S Maclean | Abrasive cytologic brush |
| US2850007A (en) * | 1956-05-31 | 1958-09-02 | American Cyanamid Co | Biopsy device |
| US2818852A (en) * | 1956-06-27 | 1958-01-07 | Heinz W Kugler | Spring-pressed surgical instrument |
| US2945316A (en) * | 1958-05-09 | 1960-07-19 | Harrington & Richardson Inc | Safety lock for firearms |
| US2923295A (en) * | 1958-05-22 | 1960-02-02 | Federico D C Guerriero | Cannula-directed hypodermic needle |
| US3030959A (en) * | 1959-09-04 | 1962-04-24 | Praemeta | Surgical lancet for blood sampling |
| NL275525A (en) * | 1961-12-26 | |||
| US3175554A (en) * | 1963-03-26 | 1965-03-30 | Becton Dickinson Co | Split biopsy needle |
| CH399953A (en) * | 1964-06-27 | 1965-09-30 | Real Patentauswertungs Anstalt | Pen containing a plurality of writing tips with different colors |
| US3477423A (en) * | 1967-01-09 | 1969-11-11 | Baxter Laboratories Inc | Biopsy instrument |
| US3592192A (en) * | 1967-06-13 | 1971-07-13 | American Hospital Supply Corp | Intravenous catheter apparatus with catheter telescoped on outside of puncturing cannula |
| US3506007A (en) * | 1967-07-24 | 1970-04-14 | Henkin Melvyn Lane | Catheter-needle |
| US3487834A (en) * | 1967-08-16 | 1970-01-06 | Silas S Smith Jr | Paracervical and pudendal appliance |
| AT287910B (en) | 1968-05-03 | 1971-02-10 | Hubert Dr Reinisch | Biopsy removal device for non-traumatic tissue removal for histological examination |
| US3561429A (en) * | 1968-05-23 | 1971-02-09 | Eversharp Inc | Instrument for obtaining a biopsy specimen |
| US3595217A (en) * | 1968-05-27 | 1971-07-27 | Robert E Rheinfrank | Fine needle aspiration biopsy of prostate |
| GB1255330A (en) | 1968-12-27 | 1971-12-01 | Baxter Laboratories Inc | Biopsy instrument |
| GB1356386A (en) * | 1970-06-03 | 1974-06-12 | Nat Res Dev | Artery entry tool |
| US3692020A (en) * | 1971-04-29 | 1972-09-19 | Robert J Schied | Rotary punch for excising uniform diopsy specimens |
| IT969196B (en) * | 1972-11-25 | 1974-03-30 | Colombo A | DEVICE FOR DENTAL USE SPECIFICALLY SUITABLE FOR INTRALIGAMENTARY ANESTHESIA |
| CH547686A (en) * | 1973-05-11 | 1974-04-11 | Smart Ag | KNIFE WITH FORWARD AND RETURN BLADE. |
| US3835860A (en) * | 1973-06-21 | 1974-09-17 | H Garretson | Surgical bone punch |
| AR196829A1 (en) * | 1973-12-06 | 1974-02-19 | Halpern D | SURGICAL INSTRUMENT FOR BIOPSIES |
| US4013080A (en) * | 1974-10-03 | 1977-03-22 | Froning Edward C | Cannula connector and direction indicator means for injection system |
| DE2519212A1 (en) * | 1975-04-30 | 1976-11-11 | Ritter Kg J | PEN, IN PARTICULAR BALLPOINT PEN |
| US3995619A (en) * | 1975-10-14 | 1976-12-07 | Glatzer Stephen G | Combination subcutaneous suture remover, biopsy sampler and syringe |
| US4073321A (en) * | 1976-03-15 | 1978-02-14 | George Moskowitz | Adjustable blocking means for dosage regulation |
| US4177797A (en) * | 1977-03-04 | 1979-12-11 | Shelby M. Baylis | Rotary biopsy device and method of using same |
| US4099518A (en) * | 1976-05-10 | 1978-07-11 | Baylis Shelby M | Biopsy apparatus |
| US4142517A (en) * | 1976-07-23 | 1979-03-06 | Contreras Guerrero De Stavropo | Apparatus for extracting bone marrow specimens |
| JPS5740964Y2 (en) * | 1976-08-12 | 1982-09-08 | ||
| US4379458A (en) * | 1977-11-24 | 1983-04-12 | Richard Wolf Gmbh | Trocar sleeves having a ball valve |
| US4169475A (en) * | 1977-12-08 | 1979-10-02 | Abbott Laboratories | Additive transfer unit |
| GB2022421B (en) * | 1978-06-08 | 1982-09-15 | Wolf Gmbh Richard | Devices for obtaining tissure samples |
| EP0010321A1 (en) | 1978-10-19 | 1980-04-30 | Renzo Dr. Brun Del Re | Device for the single-handed operation of a biopsy instrument |
| US4230123A (en) * | 1978-10-31 | 1980-10-28 | Hawkins Jr Irvin F | Needle sheath complex and process for decompression and biopsy |
| US4362156A (en) * | 1979-04-18 | 1982-12-07 | Riverain Corporation | Intravenous infusion assembly |
| GB2048686B (en) * | 1979-05-15 | 1983-03-16 | Wolf Gmbh Richard | Endoscopc instrumentation apparatus |
| CA1162811A (en) * | 1979-07-26 | 1984-02-28 | Joseph E. Miller | Bone plug cutter |
| US4308859A (en) * | 1979-08-01 | 1982-01-05 | Child Laboratories Inc. | Method of inhibiting mastitis in bovine animals |
| US4256119A (en) * | 1979-09-17 | 1981-03-17 | Gauthier Industries, Inc. | Biopsy needle |
| US4254762A (en) * | 1979-10-23 | 1981-03-10 | Inbae Yoon | Safety endoscope system |
| US4266555A (en) * | 1979-11-09 | 1981-05-12 | Khosrow Jamshidi | Biopsy needle with stylet and cannula orientation |
| US4275728A (en) * | 1980-02-25 | 1981-06-30 | The Kendall Company | Anesthesia device |
| US4356828A (en) * | 1980-03-03 | 1982-11-02 | Khosrow Jamshidi | Bone marrow aspiration needle |
| US4396021A (en) * | 1980-12-15 | 1983-08-02 | Baumgartner George C | Surgical instrument and process |
| US4333457A (en) * | 1981-02-09 | 1982-06-08 | Sterling Drug Inc. | Self-aspirating syringe with frictionally engaged locking collet |
| US4308875A (en) * | 1981-03-11 | 1982-01-05 | Universal Medical Instrument Corporation | Amniocentesis needle |
| US4411654A (en) * | 1981-04-30 | 1983-10-25 | Baxter Travenol Laboratories, Inc. | Peelable catheter with securing ring and suture sleeve |
| US4766906A (en) * | 1981-05-06 | 1988-08-30 | Ko Pen Wang | Bronchoscopic needle assembly |
| US4402324A (en) * | 1981-06-29 | 1983-09-06 | Technicare Corporation | Biopsy needle guide for sector scanner |
| US4461305A (en) * | 1981-09-04 | 1984-07-24 | Cibley Leonard J | Automated biopsy device |
| US4445893A (en) * | 1982-05-13 | 1984-05-01 | Sherwood Medical Company | Infusion apparatus |
| US4476864A (en) * | 1982-09-29 | 1984-10-16 | Jirayr Tezel | Combined multiple punch and single punch hair transplant cutting device |
| US4617940A (en) * | 1982-11-01 | 1986-10-21 | Ko Pen Wang | Bronchoscopic needle assembly |
| US4488545A (en) * | 1982-12-10 | 1984-12-18 | Sherwood Medical Company | Catheter placement device |
| SE434332B (en) * | 1983-03-23 | 1984-07-23 | Jan Ingemar Neslund | CELL SAMPLING DEVICE |
| US4609370A (en) * | 1983-06-20 | 1986-09-02 | Morrison Peter C | Surgical needle assembly and apparatus for attachment on a surgical needle assembly |
| US4517965A (en) * | 1983-06-27 | 1985-05-21 | Ellison Arthur E | Tissue retractor |
| US4525157A (en) * | 1983-07-28 | 1985-06-25 | Manresa, Inc. | Closed system catheter with guide wire |
| US4601710B1 (en) * | 1983-08-24 | 1998-05-05 | United States Surgical Corp | Trocar assembly |
| US4655226A (en) * | 1983-12-16 | 1987-04-07 | Southland Instruments, Inc. | Disposable biopsy needle unit |
| DE3347671A1 (en) * | 1983-12-31 | 1985-07-11 | Richard Wolf Gmbh, 7134 Knittlingen | TISSUE SAMPLING INSTRUMENT |
| US4776346A (en) * | 1984-02-10 | 1988-10-11 | Dan Beraha | Biopsy instrument |
| US4600014A (en) * | 1984-02-10 | 1986-07-15 | Dan Beraha | Transrectal prostate biopsy device and method |
| US4713057A (en) * | 1984-02-27 | 1987-12-15 | Medical College Of Ohio | Mechanical assist device for inserting catheters |
| US4592745A (en) * | 1984-02-29 | 1986-06-03 | Novo Industri A/S | Dispenser |
| US4570632A (en) * | 1984-03-16 | 1986-02-18 | Woods Randall L | Cystotome for eye surgery and method of opening lens capsule |
| EP0166574A3 (en) * | 1984-06-28 | 1987-06-16 | Mitchell P. Dombrowski, M.D. | Fetal blood sampling instrument |
| DE3508013A1 (en) * | 1984-07-28 | 1986-02-06 | Peter 7730 Villingen-Schwenningen Krebs | COMBINATION NEEDLE FOR THE AXILLAERE PLEXUS-BRACHIALIS-ANESTHESIA |
| IT8422756V0 (en) * | 1984-07-31 | 1984-07-31 | Zambelli Roberto | INSTRUMENT FOR THE EXECUTION OF BIOPSIES ON TISSUES TAKEN FROM BODIES TO BE TESTED. |
| US4594073A (en) * | 1984-10-31 | 1986-06-10 | Stine Charles R | Aspiration syringe holder |
| US4667684A (en) * | 1985-02-08 | 1987-05-26 | Bio-Medical Resources, Inc. | Biopsy device |
| FR2577412B1 (en) * | 1985-02-20 | 1989-04-07 | Biolog Ind Sarl | CORD PUNCTURE DEVICE |
| US4651752A (en) * | 1985-03-08 | 1987-03-24 | Fuerst Erwin J | Biopsy needle |
| GB8516230D0 (en) | 1985-06-27 | 1985-07-31 | Ambrose B K | Tissue sampler |
| US4702261A (en) * | 1985-07-03 | 1987-10-27 | Sherwood Medical Company | Biopsy device and method |
| US4723545A (en) * | 1986-02-03 | 1988-02-09 | Graduate Hospital Foundation Research Corporation | Power assisted arthroscopic surgical device |
| SE456886B (en) * | 1986-02-19 | 1988-11-14 | Radiplast Ab | DEVICE FOR TAPE SAMPLING WITH A NATIONAL DISPENSER |
| AT385890B (en) * | 1987-04-13 | 1988-05-25 | Immuno Ag | BIOPSY DEVICE FOR OBTAINING TEST SAMPLES AND APPLICATION OF SUBSTANCES IN ONE WORKPROCESS |
| US4758233A (en) * | 1986-04-22 | 1988-07-19 | N.J. Phillips TPY. Limited | Cream applicator |
| US4766907A (en) * | 1986-10-15 | 1988-08-30 | Groot William J De | Apparatus and method for performing a biopsy and a device for manipulating same |
| US4893635A (en) | 1986-10-15 | 1990-01-16 | Groot William J De | Apparatus for performing a biopsy |
| US4735215A (en) * | 1987-01-05 | 1988-04-05 | Goto David S | Soft tissue biopsy instrument |
| US4762516A (en) * | 1987-03-05 | 1988-08-09 | Luther Medical Products, Inc. | Assembly of needle catheter protector |
| US4733671A (en) * | 1987-03-17 | 1988-03-29 | Mehl Donald N | Tissue needle |
| USD306070S (en) | 1987-03-20 | 1990-02-13 | C. R. Bard, Inc. | Needle head for biopsy cannula |
| USD303571S (en) | 1987-03-20 | 1989-09-19 | C. R. Bard, Inc. | Tissue sampler |
| US4738664A (en) * | 1987-04-20 | 1988-04-19 | Ideal Instruments, Inc. | Pistol grip syringe |
| US4747831A (en) * | 1987-04-29 | 1988-05-31 | Phase Medical, Inc. | Cannula insertion set with safety retracting needle |
| US4790329A (en) * | 1987-06-12 | 1988-12-13 | Trustees Of Beth Israel Hospital | Adjustable biopsy localization device |
| US4834717A (en) * | 1987-09-25 | 1989-05-30 | Habley Medical Technology Corporation | Disposable, pre-sterilizable syringe for a pre-filled medication cartridge |
| SE459635B (en) | 1987-11-19 | 1989-07-24 | Radiplast Ab | DRIVER CONTAINS A DEVICE FOR TAPE SAMPLING |
| US5146921A (en) | 1987-11-27 | 1992-09-15 | Vance Products Inc. | Biopsy instrument stylet and cannula assembly |
| US4881551A (en) | 1988-02-01 | 1989-11-21 | Hart Enterprises, Inc. | Soft tissue core biopsy instrument |
| US4907599A (en) | 1988-02-01 | 1990-03-13 | Hart Enterprises, Inc. | Soft tissue core biopsy instrument |
| US4815476A (en) * | 1988-03-28 | 1989-03-28 | Cordis Corporation | Biopsy forceps with locking handle |
| US4889118A (en) | 1988-06-20 | 1989-12-26 | Schwiegerling Paul E | Catheter-insertion forceps |
| US4903709A (en) | 1988-09-21 | 1990-02-27 | Skinner Bruce A J | Biopsy method |
| US4950265A (en) | 1988-10-17 | 1990-08-21 | Hart Enterprises, Inc. | Arming device for a medical instrument |
| US4919146A (en) | 1988-10-25 | 1990-04-24 | Medrad, Inc. | Biopsy device |
| US4895147A (en) | 1988-10-28 | 1990-01-23 | Sherwood Medical Company | Lancet injector |
| US4924878A (en) | 1988-11-07 | 1990-05-15 | Nottke James E | Actuating mechanism for biopsy needle |
| IL88947A (en) | 1989-01-13 | 1993-02-21 | Mordechai Ravid Tel Aviv Uzi K | Biopsy syringe device and method of using same |
| DE3909575C1 (en) | 1989-03-23 | 1990-08-09 | Feinwerkbau Westinger & Altenburger Gmbh & Co Kg, 7238 Oberndorf, De | Biopsy device for one-handed operation |
| US5025797A (en) | 1989-03-29 | 1991-06-25 | Baran Gregory W | Automated biopsy instrument |
| US4917100A (en) | 1989-05-08 | 1990-04-17 | Nottke James E | Biopsy needle for use with spring-operated actuating mechanism |
| US4958625A (en) | 1989-07-18 | 1990-09-25 | Boston Scientific Corporation | Biopsy needle instrument |
| USRE34056E (en) * | 1989-07-31 | 1992-09-08 | C.R. Bard, Inc. | Tissue sampling device |
| USD309014S (en) | 1989-08-30 | 1990-07-03 | C. R. Bard, Inc. | Needle head for biopsy stylet |
| US4976269A (en) | 1989-10-26 | 1990-12-11 | Creative Research & Manufacturing | Tissue needle |
| US5036860A (en) | 1989-11-24 | 1991-08-06 | Medical Device Technologies, Inc. | Disposable soft tissue biopsy apparatus |
| GB8928302D0 (en) * | 1989-12-14 | 1990-02-21 | Clinical Product Dev Ltd | Biopsy instruments |
| US5243994A (en) | 1990-03-16 | 1993-09-14 | Ryder International Corporation | Instrument for tissue sampling including a carriage assembly |
| US5121751A (en) | 1990-03-16 | 1992-06-16 | Ryder International Corporation | Instrument for tissue sampling |
| US5048991A (en) | 1990-07-03 | 1991-09-17 | Guo Ching Chung | Structure of driving ball refill for a ball point pen |
| US5090419A (en) | 1990-08-23 | 1992-02-25 | Aubrey Palestrant | Apparatus for acquiring soft tissue biopsy specimens |
| US5161542A (en) | 1990-08-23 | 1992-11-10 | Aubrey Palestrant | Method for acquiring soft tissue biopsy specimens |
| US5188118A (en) | 1990-11-07 | 1993-02-23 | Terwilliger Richard A | Automatic biopsy instrument with independently actuated stylet and cannula |
| US5183052A (en) | 1990-11-07 | 1993-02-02 | Terwilliger Richard A | Automatic biopsy instrument with cutting cannula |
| IL96352A (en) | 1990-11-14 | 1994-11-11 | Du Kedem Tech Ltd | Hard tissue biopsy instrument |
| US5224951A (en) | 1991-02-19 | 1993-07-06 | Dexide, Inc. | Surgical trocar and spike assembly |
| US5092870A (en) | 1991-04-26 | 1992-03-03 | M3 Systems, Inc. | Spacer clip for use with a biopsy apparatus |
| US5163947A (en) | 1991-08-30 | 1992-11-17 | C. R. Bard, Inc. | Biopsy needle spacer |
| US5284156A (en) | 1991-08-30 | 1994-02-08 | M3 Systems, Inc. | Automatic tissue sampling apparatus |
| AU651745B2 (en) | 1991-12-13 | 1994-07-28 | Covidien Ag | Locking pneumoneedle |
| US5222951A (en) | 1992-04-13 | 1993-06-29 | Leonard Bloom | Guarded skin hook for surgical use |
| US5195533A (en) | 1992-05-08 | 1993-03-23 | Boston Scientific Corporation | Biopsy needle instrument for storing multiple specimens |
| JPH07507950A (en) * | 1992-05-11 | 1995-09-07 | ボストン サイエンティフィック コーポレイション | Multi-needle biopsy instrument |
| US5470308A (en) * | 1992-08-12 | 1995-11-28 | Vidamed, Inc. | Medical probe with biopsy stylet |
| US5257632A (en) | 1992-09-09 | 1993-11-02 | Symbiosis Corporation | Coaxial bone marrow biopsy coring and aspirating needle assembly and method of use thereof |
| US5392790A (en) | 1993-04-30 | 1995-02-28 | Ryder International Corporation | Instrument for obtaining bore type tissue sampling |
| US5595185A (en) * | 1994-08-11 | 1997-01-21 | N.M.B. Medical Applications Ltd. | Single puncture multi-biopsy gun |
-
1995
- 1995-06-07 US US08/474,756 patent/US5779647A/en not_active Expired - Lifetime
-
1996
- 1996-05-23 ES ES96920425T patent/ES2203705T3/en not_active Expired - Lifetime
- 1996-05-23 AT AT96920425T patent/ATE245940T1/en not_active IP Right Cessation
- 1996-05-23 JP JP9500688A patent/JPH11506634A/en active Pending
- 1996-05-23 DE DE69629293T patent/DE69629293T2/en not_active Expired - Lifetime
- 1996-05-23 EP EP96920425A patent/EP0831743B1/en not_active Expired - Lifetime
- 1996-05-23 CA CA002223415A patent/CA2223415C/en not_active Expired - Lifetime
- 1996-05-23 WO PCT/US1996/007515 patent/WO1996039941A2/en active IP Right Grant
-
1998
- 1998-03-30 US US09/050,786 patent/US6626850B1/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| DE69629293T2 (en) | 2004-01-22 |
| JPH11506634A (en) | 1999-06-15 |
| WO1996039941A3 (en) | 1997-02-27 |
| ES2203705T3 (en) | 2004-04-16 |
| CA2223415A1 (en) | 1996-12-19 |
| DE69629293D1 (en) | 2003-09-04 |
| ATE245940T1 (en) | 2003-08-15 |
| WO1996039941A2 (en) | 1996-12-19 |
| US6626850B1 (en) | 2003-09-30 |
| EP0831743B1 (en) | 2003-07-30 |
| US5779647A (en) | 1998-07-14 |
| EP0831743A2 (en) | 1998-04-01 |
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Legal Events
| Date | Code | Title | Description |
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| EEER | Examination request | ||
| MKEX | Expiry |
Effective date: 20160524 |